In the following simple stylised script,
mutable struct P <: AbstractP this that end p = P() ... sol1 = optimal(p) q = p p = add(p, something) # p changed sol2 = optimal(p) p = q sol3 = optimal(p)
would like that sol3 = sol1, but instead got sol3 = sol2. Unfortunatelly, it is still not clear what I should do to get the desired result, that sol3 = sol1? Many thanks!